Now, details have surfaced that might explain why Mayer chose to call all Yahoos back to the company's Sunnyvale, Calif., headquarters.

According to Business Insider, which cites one anonymous source, Mayer checked the logs of Yahoo's Virtual Private Network -- a system many businesses use to allow secure entry into their digital network -- to find out how often remote employees checked in.

The report says Mayer made the move to ban telecommuting after learning Yahoo telecommuters didn't log in often enough. All Things D also reported Mayer's VPN checks.

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